2. You’re sitting in class idly recalling the entire Table of Elements
forwards and backwards, then your teacher announces your next
examination will be held on March 9
You glance up and murmur quietly. “That’s a Monday, isn’t it?”
And when the calendar is checked,
you’re right! What’s more,
you can reel off, almost instantly,
the day of any date throughout
the year.
How’s it done?
3. It requires a little preparation.
Find a calendar and use it to
discover the dates of the first
Sunday of each month
throughout the year.
In 2015, for example, the first
Sunday of January is on
January 4, the first Sunday of
February is February 1, the
first Sunday of March is
March 1, the first Sunday of
April is April 5 and so on.
4. Write down the numbers of those first Sundays, giving you a
twelve digit number for the year. In 2015 that twelve digit
number is:
411537526416
Now, use your own technique to memorise that one. When
you have it burned in, you’re ready.
5. When the teacher tells you the next examination is on March 9,
you consult your memorised number and find that (in 2015) the
first Sunday in March falls on March 1.
Armed with that information, you can calculate that the second
Sunday falls on March 8. You do this by adding seven (since a
week has seven days).
Since March 8 is a Sunday, it follows that
the 9th, the day following, has to be
a Monday.
6. If anybody ask you how you are able to put days into dates so
easily, lie a little. Tell them you’ve memorised the entire year’s
calendar.
Good luck!